Resolve #3408721 "Duplicated entry of"

Closes #3408721

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• 8a718af4 - Remove duplicates from given value.

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added 2 commits

• 32a9e0e9 - 1 commit from branch project:8.x-1.x
• 346c44f8 - Remove duplicates from given value.

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added 3 commits

• 346c44f8...8f82fe16 - 2 commits from branch project:8.x-1.x
• 2278f474 - Remove duplicates from given value.

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added 1 commit

• 25937a11 - phpcs.

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merged